不可一世的傲娇
[bù kĕ yī shì de ào jiāo]
The phrase combines two concepts: being unbearably arrogant (不可一世, 'too arrogant for words') and tsundere personality (傲娇, 'being shy yet stubborn or haughty'). Together, it means an attitude or behavior of seeming superior but secretly harboring a crush or liking someone.